No abstract available.
Needles*

No abstract available.
Needles*

No abstract available.
Needles

No abstract available.
Needles* ; Prostatitis*

By the research of the characteristics and market using situation of all needle medical supplies, this paper sums up their development trend to provide reference for medical practitioners or the classification management of needle medical supplies.
Humans ; Needles

No abstract available.
Depression* ; Needles*

To relieve intractable upper abdominal cancer pain using 75% alcohol, Celiac Plexus Blocks (C.P.B.) were performed by means of the classic two needle technique in 7 cases and by single needle transaortic method in 3 cases under fluroscopic guidance. Both methods relieved the pain effectively and there was no significant hemorragic, neurologic and other complications. The degree of pain relief estimated by Graphic Rating Scale (GRS) and the incidence of complication were similar between two methods but the single needle transaortic method was more simple, easier and effective with just one third of alcohol used in the classic method.
Celiac Plexus* ; Incidence ; Needles

PURPOSE: The purpose of this study was to determine the factors influencing on the size of thermal lesions after ablation using an expandable radio-frequency needle electrode in porcine liver. MATERIALS AND METHODS: Ablation procedures involved the use of a monopolar radio-frequency generator and 15-G needle electrodes with four and seven retractable hooks (RITA Medical System, Mountain View, Cal.,U.S.A.). The ablation protocol in fresh porcine liver comprised of combinations of varying hook deployment, highest set temperature, and ablation time. Following ablation, the maximum diameter of all thermal lesions was measured on a longitudinal section of the specimen. Ten representive lesions were examined by an experienced pathologist. RESULTS: At 3-cm hook deployment of the needle electrode with four lateral hooks, the size of spherical thermal lesions increased substantially with increases in the highest set temperature and ablation time until 11 minutes. After 11 minutes lesion size remained similar, with a maximum diameter of 3.3 cm. At 2-cm hook deployment, sizes decreased to about 2/3 of those at 3 cm, and at 1-cm hook deployment lesions were oblong. At 3-cm hook deployment of a needle electrode with seven hooks, the size of thermal lesions increased with increasing ablation time until 14 minutes, and the maximum diameter was 4.1 cm. Microscopic examination showed a wide zone of degeneration and focal coagulation necrosis. CONCLUSION: The size of thermal lesions produced by the use of an expandable radio-frequency needle electrode were predictable, varying according to degree of hook deployment, highest set temperature, and ablation time.
Electrodes* ; Liver ; Necrosis ; Needles*

No abstract available.
Anesthesia, Spinal* ; Needles* ; Ultrasonography*

During massive transfusions especially under pressure, considerable hemolysis has been expected. It had been assumed that hernolysis would increase with increasing age of the bank blood, increasing pressure and with decreasing bore of the needle. Moss and Stauntan, however, found that hemolysis actually increased when blood was forced through larger bore needles. The authors have studied the magnitude of hemolysis according to various needle sizes under ordinary clinical transfusion conditions, and concluded as follows: 1) Hemolysis was maximum when a 18G needle was used and minimum with use of a 22G. needle regardless of the age and temperature of the bank blood, 2) Hemolysis increased with increasing age of the bank blood. 3) When the needle size was constant, hemolysis was not affected by warming of the bank blood.
Clinical Study* ; Hemolysis* ; Needles